docs: def get_mean_and_stddevs(self, sites, rup, dists, imt, stddev_types):
          """
          See :meth:`superclass method
          <.base.GroundShakingIntensityModel.get_mean_and_stddevs>`
          for spec of input and result values.
          """
  
          # get mean and std using the superclass
          mean, stddevs = super().get_mean_and_stddevs(
              sites, rup, dists, imt, stddev_types)
          
          A08 = self.A08_COEFFS[imt]
          f_ena = 10.0 ** (A08["c"] + A08["d"] * dists.rjb)
  
          return np.log(np.exp(mean)*f_ena), stddevs